CN208367139U - A kind of measurement loop condition monitoring device being integrated in special transformer terminals - Google Patents
A kind of measurement loop condition monitoring device being integrated in special transformer terminals Download PDFInfo
- Publication number
- CN208367139U CN208367139U CN201820895094.7U CN201820895094U CN208367139U CN 208367139 U CN208367139 U CN 208367139U CN 201820895094 U CN201820895094 U CN 201820895094U CN 208367139 U CN208367139 U CN 208367139U
- Authority
- CN
- China
- Prior art keywords
- unit
- special transformer
- circuit
- monitoring device
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses the measurement loop condition monitoring devices that one kind can be integrated in special transformer terminals, belong to metering secondary state-detection field.A kind of measurement loop condition monitoring device being integrated in special transformer terminals, including special transformer acquisition terminal carry out data communication by serial ports and loop state monitoring device；Loop state monitoring device, comprising: power supply unit, communication unit, CPU element, ADC unit, DAC unit and signal coupling unit.The special equipment of the utility model can be integrated in special transformer acquisition terminal, special transformer acquisition terminal is set to have the function of accurately identifying metering secondary connection status, for be effectively reduced power grid because caused by secondary circuit failure line loss strong means are provided, provide a completely new selection for power grid security.
Description
Technical field
The utility model relates to metering secondary state-detection fields, and relate more specifically to one kind and can be integrated in specially
The measurement loop condition monitoring device of transformer terminals.
Background technique
It is developed by China Electric Power Research Institute within loop state logging 2014, comes into the popularization of batch linked network at present
Stage.Loop state logging is to combine to measure live actual demand, the multicriterion recognition methods development based on impedance characteristic
, normal connection, open circuit, second short circuit, primary bypass, loop commutation and the magnetic field that can accurately identify metering secondary are different
Often wait circuits abnormality.However, certain applications can not install loop state logging, but there is the knowledge of secondary circuit state
Other tight demand.
Loop state logging is combined according to the actual demand of relative national standards, regulation and vast power consumer
The technologies such as advanced embedded OS technology, AC sampling, communication, TCP/IP network develop new one
For terminal.Terminal for loop state monitor, can the circuit real-time monitoring TA normally connect, TA secondary circuit open a way, TA secondary terminals
The states such as son shunts, TA is once shunted, the circuit TA concatenation rectifier equipment, the replacement of TA no-load voltage ratio, magnetic field exception, and support GPRS/
GSM/SMS/CDMA/4G mobile communication, it can be achieved that loop state event real-time upload.Q/GDW 1374.4-201X is detailed in " to return
Line state logging technical specification ".
Special transformer acquisition terminal is detailed in Q/GDW 1374.1-2012 " special transformer acquisition terminal technical specification ".
Summary of the invention
The purpose of this utility model is to provide one kind to have the complete metering secondary state of loop state logging
The special equipment of identification function is mainly used for no position installation loop state logging equipment and needs to metering secondary returning
This part that road carries out the online monitoring of loop state in real time specially becomes user, can accurately identify measurement loop circuit normally connect,
The circuits abnormalities such as circuit open circuit, circuit second short circuit, circuit once bypass, loop commutation and magnetic field are abnormal.Propose one
Kind can be integrated in the measurement loop condition monitoring device of special transformer terminals, and concrete scheme is to include
Special transformer acquisition terminal carries out data communication by serial ports and loop state monitoring device；
Loop state monitoring device, comprising: power supply unit, communication unit, CPU element, ADC unit, DAC unit and signal
Coupling unit；
Communication unit receives the reading metering secondary status command that special transformer acquisition terminal issues and is input to CPU element；
CPU element output frequency can reconcile the adjustable high frequency sinusoidal digital signal of amplitude to DAC unit；DAC unit is high frequency sinusoidal number
Word signal is converted into sinusoidal analog signal, output sinusoidal analog signal to signal coupling unit；Signal coupling unit is sinusoidal mould
Quasi- signal is injected into secondary circuit；The high frequency and power frequency component of signal coupling unit coupling secondary circuit；Signal coupling unit is defeated
High frequency and power frequency component are to ADC unit out；High frequency and power frequency analog signal are carried out digital-to-analogue conversion by ADC unit, export high frequency
Word signal and power frequency digital signal are to CPU element；CPU element converts high-frequency digital signal by communication protocol and power frequency number is believed
Number for measurement loop connection state information input communication unit；Communication unit inputs the connection state information of measurement loop special
Become acquisition terminal.
Preferably, connection state information include circuit normally connect, circuit open circuit, circuit second short circuit, circuit it is once other
Road, loop commutation and magnetic field are abnormal.
Preferably, serial ports includes TTL interface, RS232 interface, RS85 interface.
Preferably, communication protocol is DLT-645 communication protocol.
Preferably, the adjustable extent of frequency is 5kHz-50kHz, and the adjustable extent of amplitude is 8%-100%.
The special module of the utility model can be integrated in special transformer acquisition terminal, have special transformer acquisition terminal and accurately identify meter
Measure the function of secondary circuit connection status, for be effectively reduced power grid because caused by secondary circuit failure line loss strong hand is provided
Section, provides a completely new selection for power grid security.
Detailed description of the invention
Fig. 1 is the measurement loop condition monitoring device structure chart that the utility model one kind can be integrated in special transformer terminals；
Fig. 2 is the measurement loop condition monitoring device electric interfaces figure that the utility model one kind can be integrated in special transformer terminals；
Fig. 3 is the measurement loop condition monitoring device communication flow diagram that the utility model one kind can be integrated in special transformer terminals；
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the measurement loop condition monitoring device knot that one embodiment one kind of the utility model can be integrated in special transformer terminals
Composition；Fig. 2 is the measurement loop condition monitoring device electric interfaces figure that the utility model one kind can be integrated in special transformer terminals；Fig. 3
It is the measurement loop condition monitoring device communication flow diagram that the utility model one kind can be integrated in special transformer terminals.
The utility model discloses the measurement loop condition monitoring devices that one kind can be integrated in special transformer terminals, are mainly used for not having
Have position installation loop state logging equipment and need to carry out metering secondary the online monitoring of loop state in real time this
It is a part of specially to become user, have the various functions about metering secondary state recognition of complete loop state logging.
As shown in Fig. 2, including special transformer acquisition terminal and loop state monitoring device, wherein loop state monitoring modular passes through
Serial ports and special transformer acquisition terminal carry out data communication, and wherein serial ports includes TTL interface, RS232 interface, RS85 interface etc.；Such as Fig. 3
Shown loop state monitoring device reads the measurement loop status command that special transformer acquisition terminal is sent, and loop state monitoring modular returns
The connection state information of measurement loop is returned, wherein connection state information includes that circuit normally connects, circuit is opened a way, circuit is secondary short
Road, circuit once bypass, loop commutation and magnetic field are abnormal etc., specifically as shown in Figure 1, loop state monitoring device includes: electricity
Source unit, communication unit, CPU element, ADC unit, DAC unit and signal coupling unit；Wherein power supply unit is other units
Power supply is provided, communication unit receives the reading metering secondary status command that special transformer acquisition terminal issues and is input to CPU element；
The high frequency sinusoidal number that the adjustable extent of CPU element output frequency is 5kHz-50kHz and the adjustable extent of amplitude is 8%-100%
Word signal is to DAC unit；High frequency sinusoidal digital signal is converted into sinusoidal analog signal by DAC unit, exports sinusoidal analog signal
To signal coupling unit；Sinusoidal analog signal is injected into secondary circuit by signal coupling unit；Signal coupling unit coupling is secondary
The high frequency and power frequency component in circuit；Signal coupling unit exports high frequency and power frequency component to ADC unit；ADC unit high frequency and
Power frequency analog signal carries out digital-to-analogue conversion, exports high-frequency digital signal and power frequency digital signal to CPU element；CPU element passes through
Communication protocol converts high-frequency digital signal and power frequency digital signal is the connection state information input communication unit of measurement loop,
Middle communication protocol is DLT-645 communication protocol；The connection state information of measurement loop is inputted special transformer acquisition terminal by communication unit.
The special equipment of the utility model can be integrated in special transformer acquisition terminal, have special transformer acquisition terminal and accurately identify meter
Measure the function of secondary circuit connection status, for be effectively reduced power grid because caused by secondary circuit failure line loss strong hand is provided
Section, provides a completely new selection for power grid security.
Claims (5)
1. the measurement loop condition monitoring device that one kind can be integrated in special transformer terminals characterized by comprising
Special transformer acquisition terminal carries out data communication by serial ports and loop state monitoring device；
Loop state monitoring device, comprising: power supply unit, communication unit, CPU element, ADC unit, DAC unit and signal coupling
Unit；
Communication unit receives the reading metering secondary status command that special transformer acquisition terminal issues and is input to CPU element；CPU is mono-
First output frequency can reconcile the adjustable high frequency sinusoidal digital signal of amplitude to DAC unit；DAC unit is high frequency sinusoidal digital signal
It is converted into sinusoidal analog signal, output sinusoidal analog signal to signal coupling unit；Signal coupling unit is sinusoidal analog signal
It is injected into secondary circuit；The high frequency and power frequency component of signal coupling unit coupling secondary circuit；Signal coupling unit exports high frequency
With power frequency component to ADC unit；High frequency and power frequency analog signal are carried out digital-to-analogue conversion by ADC unit, export high-frequency digital signal
With power frequency digital signal to CPU element；CPU element converts high-frequency digital signal by communication protocol and power frequency digital signal is meter
The connection state information for measuring circuit inputs communication unit；The connection state information input of measurement loop is specially become acquisition by communication unit
Terminal.
2. equipment according to claim 1, it is characterised in that: the connection state information include circuit normally connect,
Circuit open circuit, circuit second short circuit, circuit once bypass, loop commutation and magnetic field are abnormal.
3. equipment according to claim 1, it is characterised in that: the serial ports include TTL interface, RS232 interface and
RS85 interface.
4. equipment according to claim 1, it is characterised in that: the communication protocol is DLT-645
Communication protocol.
5. equipment according to claim 1, it is characterised in that: the adjustable extent of the frequency is 5kHz-50kHz, and
The adjustable extent of the amplitude is 8%-100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895094.7U CN208367139U (en) | 2018-06-08 | 2018-06-08 | A kind of measurement loop condition monitoring device being integrated in special transformer terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895094.7U CN208367139U (en) | 2018-06-08 | 2018-06-08 | A kind of measurement loop condition monitoring device being integrated in special transformer terminals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367139U true CN208367139U (en) | 2019-01-11 |
Family
ID=64928360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820895094.7U Active CN208367139U (en) | 2018-06-08 | 2018-06-08 | A kind of measurement loop condition monitoring device being integrated in special transformer terminals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208367139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415287A (en) * | 2020-11-16 | 2021-02-26 | 中国电力科学研究院有限公司 | Method and system for identifying transformation ratio replacement of metering current transformer |
-
2018
- 2018-06-08 CN CN201820895094.7U patent/CN208367139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415287A (en) * | 2020-11-16 | 2021-02-26 | 中国电力科学研究院有限公司 | Method and system for identifying transformation ratio replacement of metering current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2019218021B2 (en) | Non-intrusive load identification-based submetering smart electricity meter | |
| CN102967742B (en) | The electric mutual inductor of wide current detection range | |
| Kesav et al. | Automated Wireless Meter Reading System for Monitoring and Controlling Power Consumption | |
| CN104569902A (en) | Digital type electric energy meter power consumption measuring device and method | |
| CN102749549A (en) | Intelligent checking system for substation alternating current voltage secondary circuit | |
| CN108445293A (en) | A kind of quantum chip port impedance test device and measurement method | |
| CN208367139U (en) | A kind of measurement loop condition monitoring device being integrated in special transformer terminals | |
| CN102608414B (en) | Embedded electric energy measuring method and application extension method of high voltage electrical switchgear | |
| CN202351348U (en) | Intelligent monitoring instrument of transformer | |
| CN202093088U (en) | Electrical parameter measuring device | |
| CN106327823A (en) | Intelligent electricity meter copy system based on internet of things and ZigBee | |
| CN103986231A (en) | Networked intelligent transformer substation metering system | |
| CN206930710U (en) | Hydroelectric power plant's modular multichannel remote power metering device | |
| CN202443119U (en) | Digital electric-energy meter calibrator with digital electronic mutual-inductor output end | |
| CN206038895U (en) | Harmonic is multichannel error calculation device for electric energy meter verification | |
| CN204789952U (en) | Special UPS power output power characteristic's of electric power testing arrangement | |
| CN208125825U (en) | Wireless telemetering phase checking device | |
| CN207689524U (en) | A kind of intelligent termination for Electric Energy Tariff Point Metering Device on-line testing | |
| CN209821310U (en) | Transmission line parameter test safety protection platform | |
| CN104049141A (en) | Load controlling method of intelligent and integral multifunction watt-hour meter | |
| CN209432996U (en) | Single-phase meter on-site calibration device | |
| CN208547700U (en) | A kind of portable binary-coded decimal detection device based on sub-connecting switch of transformer | |
| CN110632373A (en) | Integrated intelligent low-voltage line monitoring device | |
| CN111707983A (en) | Method, equipment, system and medium for testing constant of electric energy meter | |
| CN203799251U (en) | Power manager capable of monitoring laboratory bench station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |